<!DOCTYPE html>
<html>
<head>
<style type="text/css">
.separator {
 height: 20px;
 background-color: blue;
}
#overflow {
 overflow: hidden;
 height: 200px;
 margin: 20px 0;
 background-color: lightgreen;
}
#child {
 height: 160px;
 margin: 40px 0;
 background-color: green;
}
</style>
</head>
<body>
<div class="separator"></div>
<div id="overflow">
 <div id="child"></div>
</div>
<div class="separator"></div>
</body>
</html>
